how to have pixels of a bitmap sorted?

Question

0.00/5 (No votes)

See more:

Hello,I have a bitmap including pixels.I want to have something like a list of the sorted pixels so that I can reach their color,original place ,etc.What's the solution?Should I have a list of strictures_including color and place of pixels?If so,how can I sort the structures by one of their parts(color)?Here is the algorithim I'm trying to write with name:"Algorithm 4.1 Vincent-Soille watershed algorithm [52]."
in pdf named:"The Watershed Transform: Denitions, Algorithms and
Parallelization Strategies"
with address:"http://www.google.com/url?q=http://citeseerx.ist.psu.edu/viewdoc/download%3Fdoi%3D10.1.1.10.3852%26rep%3Drep1%26type%3Dpdf&sa=U&ei=nfUfTs2sFITAswbs8pWOAg&ved=0CA0QFjAA&sig2=-CJTSerOvP-yuFsS8i4A5A&usg=AFQjCNFT4WU0htcqWLrxlTRSyzZfEFo-HQ[^]"
Thanks in advance.

Posted 14-Jul-11 5:10am

ready to learn

Updated 14-Jul-11 22:17pm

v2

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2011-07-14T08:11:00

Solution 1

Why would you want to do that? All you will get is a data set that is bigger than the original bitmap by huge amounts: the location data alone will be 32 bits - the same size as a ARGB pixel - without the colour information, or list overhead.

What are you trying to do that you think you need this?

Posted 14-Jul-11 8:11am

OriginalGriff

Comments

ready to learn 15-Jul-11 1:58am

I want to write watershed algorithim which determines the areas of the picture(according to the color).One of the steps in the algorithim I found is what I explained.after all I would be so thankfull if you help me to solve my problem or give me another watershed algorithim which doesn't cost this problem.

Sergey Alexandrovich Kryukov · Answer 2 · 2011-07-14T21:39:00

I would suggest to use System.Collection.Generic.Dictionary<Color, System.Collections.Generic.List<Point>>. It would index all pixel locations by the color (ARGB) with pixels of identical color put in the same list. However, I'm not sure this is exactly what needs to be done at first step. Rather you will need to merge close colors in a single "average" color before classifying them, with parametric criterion for the colors to be considered "close". Nevertheless, the same data structure would help.

—SA

CPallini · Answer 3 · 2011-07-14T21:54:00

Solution 3

asma_from_yazd wrote:
I want to have something like a list of the sorted pixels so that I can reach their color,original place ,etc.What's the solution?

Choose the sorting criterion.
Sort the pixels according to the choosen sorting criterion.

No more, no less.

However, as OriginalGriff noted, without (yours) further explanations, we can hardly find useful such a operation.

Posted 14-Jul-11 21:54pm

CPallini

Comments

ready to learn 15-Jul-11 4:05am

I explaned more for OriginalGriff ,please read my explanation,besides I should say I want that list sorted by color so that I start from the least integer(color),go on, and reach the pixcels which have that color.I will show you the algorithim If I can

CPallini 15-Jul-11 4:08am

Hence you need 'just' sorted list of positions (color number being the list key).

ready to learn 15-Jul-11 4:21am

yeah.and how can I do that?